Kudankulam reactors have generated over 1.22 lakh million units as of December 2025: Site Director
The Hindu
Kudankulam reactors have generated over 1.22 lakh million units of electricity, with ongoing construction progressing on new reactors.
The first two 1,000 MW VVER reactors of the Kudankulam Nuclear Power Project (KKNPP), built with Russian technical knowledge, have generated over 1.22 lakh million units of electricity till December 2025. Besides, the KKNPP administration has achieved 83% physical progress in the ongoing construction of the third and fourth reactors coming-up on India’s largest ‘Nuclear Park’ in the district.
Delivering the Republic Day address at Anu Vijay Township, the residential colony of the KKNPP officials in Chettikulam on Monday, Site Director of KKNPP B. Sathish Kumar said the plant’s Unit-1, commissioned in October 2013, had generated 68,156 million units of power, and Unit-2, after being commissioned in October 2016, had produced 54,080 million units of clean energy during the period between the first synchronization and December 2025.
Hence, the total quantum of power generated by both reactors has crossed 1,22,236 million units till December 2025, indirectly preventing the release of around 106 million tonnes of carbon dioxide into the atmosphere, he said.
Mr. Sathish Kumar contended, “With excellent operational capacity, KKNPP’s reactors one and two will achieve record generation and capacity factor during the financial year of 2025-26.”
KKNPP Site Director B. Sathish Kumar at the Republic Day celebrations at Anu Vijay Township in Chettikulam on Monday. | Photo Credit: SPECIAL ARRANGEMENT
Regarding the construction of reactors three and four, which were being built at an outlay of ₹39,849 crore, he said work was in full swing. The overall physical progress was 83% as of December 2025, with the completion of major milestone achievements such as commencement of pre-stressing activities in Unit-3, inner containment dome concreting in Unit-4, turbine generator, including condenser erection completion, in Unit-3, commissioning and charging of a 220-KV gas insulated substation and extending power supply, commissioning of the desalination and demineralizing plants, and transfer of demineralised water to Unit-3 for taking up process system commissioning.













